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Boiling of two zeotropic mixtures and R502 inside a plain horizontal tube.

Author(s) : THOME J. R., KATTAN N., FAVRAT D.

Summary

In tube flow boiling experiments for two new zeotropic refrigerant mixtures and R502 have been carried out at three saturation temperatures over a wide range of local vapour qualities. The zeotropic mixtures tested were HP80 and HP62. Local flow boiling coefficients for HP62 are slightly larger than those for R502 under the same test conditions while those for HP80 are slightly smaller. The heat transfer performances of the three fluids are generally quite accurately predicted by an existing flow boiling correlation modified to include a nucleate boiling mixture equation. However, in the post dryout regime at high vapour qualities the measured coefficients are much lower than those predicted.

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Pages: p 565-574

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Details

  • Original title: Boiling of two zeotropic mixtures and R502 inside a plain horizontal tube.
  • Record ID : 1995-2165
  • Languages: English
  • Source: CFCs, the Day After.
  • Publication date: 1994/09/21

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